Add TextAreaWithOneWildcard WITHOUT designer project.

[JSmit.11]

Hi, All

I have a fine working project but i don't have a designer project files.

I want to add a TextAreaWithOneWildcard modifying only source code.

I was using this article as a reference

https://support.touchgfx.com/docs/development/ui-development/ui-components/miscellaneous/text-area

I have added a code for a new control like in the article but control is not displaying.

I am missing something.

I have added also an

add(VARIABLE_NAME) in the base class of the screen. That was not described in the article above.

Maybe there are some hidden code which I can't find using notepad++ search?

[MM..1]

Why you dont show code here?

[Romain DIELEMAN]

Hi,

As MM said sharing your code would help us see if you have forgotten something or not. What do you mean exactly by "control" ?

Just to verify something, you wrote that you added "an add(VARIABLE_NAME) in the base class of the screen. Be careful, you should never put user code in files in the generated folder (so typically <name of screen>ViewBase.cpp/hpp files) as they will get overwritten at every TouchGFX Designer code generation, so this is a bad habit to have.

/Romain

[JSmit.11]

Hi All, and thanks for reply.

>>Be careful, you should never put user code in files in the generated folder

Yeah. I am in a bit non standard situation. I don't have a designer project and trying to add new control manually. Not a bad way to learn how TouchGFX internally organized.

So here is my source code:

I have added a variable definition to the class which is derived from system class in the following way

class FDRScrViewBase : public touchgfx::View<FDRScrPresenter>

The variable definition:

touchgfx::TextAreaWithOneWildcard TxPowerArea;

Than in constructor of FDRScrViewBase i have added

add(TxPowerArea);

Than there is a class FDRScrView : public FDRScrViewBase

In it's constructor i have added:

TxPowerArea.setPosition(0, 100, 137, 15);

TxPowerArea.setColor(touchgfx::Color::getColorFrom24BitRGB(196, 196, 196));

TxPowerArea.setLinespacing(0);

TxPowerArea.setTypedText(touchgfx::TypedText());

TxPowerArea.setWildcard(TxPowerArea_text);

TxPowerArea.setVisible(true);

Then there is a method

void FDRScrView::handleTickEvent()

I have added the following lines

Unicode::snprintf(TxPowerArea_text, 4, "HELO");

TxPowerArea.invalidate();

There is a definition of TxPowerArea_text in the FDRScrView class

Unicode::UnicodeChar TxPowerArea_text[15];

I have checked with debugger that all lines of code are executed.

I don't see any text on the screen.

[MM..1 · Accepted solution]

You miss one set, in normal area need FONT and is based on existed text resource. Perfect is if your project have one TypedText with font and <value> definition in string for wildcard. Then your line need change to

textAreaXXX.setTypedText(touchgfx::TypedText(T_SINGLEUSEID1));

when you dont have existed resource, you need add to more files for example into TypedTextDatabase.cpp ...

too without project you cant add new font ...

[JSmit.11]

Thanks a lot. MM..1.

It worked!!!

I was confused by documentation that stated that font id is an optional parameter.

I thought that it will work without any font specification.

Many thanks!!